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Finding the Fourth Proportional to 1,298,533.44, 1,789,835.04 and 868,658.88

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Solution

The fourth proportional to 1,298,533.44, 1,789,835.04 and 868,658.88 is: 1,197,316.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,533.44 : 1,789,835.04 = 868,658.88 : x
  2. Step 2: Convert to fraction form
    1,298,533.44/1,789,835.04 = 868,658.88/x
  3. Step 3: Cross multiply
    1,298,533.44x = 1,789,835.04 × 868,658.88
  4. Step 4: Simplify right side
    1,298,533.44x = 1,554,756,101,231.16
  5. Step 5: Solve for x
    x = 1,554,756,101,231.16/1,298,533.44
  6. Step 6: Final answer
    x = 1,197,316.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.